In recent years, the importance of the polymer light-emitting diode (PLED) has grown immensely, proving very desirable ill numerous applications because of very high efficiencies, low power consumption, and ease of fabrication. Typically, these devices have been constructed in it layered, thin-film fashion consisting of either electron- and hole-transport materials doped with it luminescent dye (Hebner, T. R.; Sturm, J. C. Appl. Phys. Lett. 1998, 73, 1775. Jiang, X.; Register, R. A.; Killeen, K. A.; Thompson, M. E.; Pschenitzka, F; Hebner, T. R.; Sturm, J. C. J. Appl. Phys. 2002, 91, 6717. Yeh, K. M.; Chen, Y. Org. Electron. 2008, 9,45-50. Oh, G. C.; Yun, J. J.; Park, S. M.; Son, S, H.; Him, E. M.; Gu, H. B.; Jin, S. H.; Yoon, Y. S. Mol. Cryst. Liq. Cryst, 2003, 405, 43-51, Lee, J. L; Chu, H. Y., Kim, S. H.; Do, L. M.; Zyung T.; Hwang, D. H. Opt. Mater. 2003, 21, 205-210. Hwang, D.-H.; Park, M.-J.; Lee, C. Synth. Met. 2005, 152, 205-208) or a conjugated polymer that can be engineered to tune the emission of the PLED to particular wavelengths. Stable PLED aqueous colloidal dispersions were prepared containing poly[2-methyoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], (MEH-PPV), poly(9,9-di-n-octyfluorenyl-2,7-diyl) (PFO) and a binary poly(9,9-di-n-octylfluorenyl-2,7-diyl)/poly(2,5-diocyl-1,4-phenyleneviny lene) (PFO/POPPV) particle dispersion. Red-, green-, and blue-light-emitting colloidal dispersions could then be combined to achieve color-tailored emissions spanning the visible spectrum.